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http://dx.doi.org/10.5515/KJKIEES.2008.19.12.1303

PAPR Reduction Techniques and Pre-Distortion Techniques to Improve Nonlinearity and Efficiency of the TWT Power Amplifier in the Satellite Wibro System  

Park, Pyung-Joo (Department of Telecommunication and Information Engineering, Korea Aerospace University)
Seo, Myung-Hwan (Department of Telecommunication and Information Engineering, Korea Aerospace University)
Lee, Byung-Seub (Department of Telecommunication and Information Engineering, Korea Aerospace University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.12, 2008 , pp. 1303-1312 More about this Journal
Abstract
Satellite WiBro system has high PAPR characteristics in addition to the nonlinear characteristics of the power amplifier. These characteristics reduce amplifying efficiency of the power amplifier and also cause high error rate and interference with adjacent channels. This paper proposed satellite WiBro based system to reduce input signal's IBO of TWTA remarkably by adapting simultaneously PAPR reduction techniques, active-constellation extension technique and pre-distortion technique.
Keywords
OFDM; Power Amplifier; Nonlinearity; PAPR; Pre-distortion;
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